What does Deuteronomy 12:1 mean?

These are the rules and instructions you need to follow for as long as you live in the land that the Lord, the God of your ancestors, is giving you to take over. Deuteronomy 12:1 - Modern Text Bible

(Moses is setting out the basic laws the people must keep once they settle in the promised land. This is about living under God's direction, not just surviving.)